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An Evaluation of Potential Next-day Residual Effects of Eszopiclone in Healthy Volunteers.

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
GlaxoSmithKline
ClinicalTrials.gov Identifier:
NCT00699608
First received: June 17, 2008
Last updated: May 31, 2012
Last verified: March 2011
  Purpose

This study will explore potential next-day residual effects of a single evening dose of 3mg of the hypnotic, eszopiclone, 7.5mg of zopiclone, and placebo, in healthy adult subjects.


Condition Intervention Phase
Healthy Subjects
Sleep Initiation and Maintenance Disorders
Drug: GSK1755165; placebo; zopiclone
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Treatment
Official Title: A Randomised, Double-blind, Double-dummy, Placebo-controlled, 3-way Crossover Study to Evaluate Potential Next-day Residual Effects of a Single Evening Dose of 3mg Eszopiclone and 7.5mg Zopiclone in Healthy Adult Subjects.

Resource links provided by NLM:


Further study details as provided by GlaxoSmithKline:

Primary Outcome Measures:
  • Mean Tracking Error Assessed During the Continuous Tracking Test (CTT) [ Time Frame: 7.5, 8, 8.5, 9, and 9.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the mean of the five assessments conducted 7.5, 8, 8.5, 9, and 9.5 hours post-dose (double-blind) The CTT is a task (duration of 8 minutes) of psychomotor function that entails using a slider to keep a cursor in alignment with a moving target on a visual display unit screen. The movement of the target is the function of an irregular sine wave, and cursor accuracy is measured by the mean tracking error - the difference between the centers of target and cursor in pixels, sampled 5 times per second, over the test. Lower scores are indicative of more accurate tracking.


Secondary Outcome Measures:
  • Mean Tracking Error (MTE) Assessed During the CTT [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) . The CTT is a task (8 minute duration) of psychomotor function that entails using a slider to keep a cursor in alignment with a moving target on a visual display unit screen. The movement of the target is the function of an irregular sine wave, and cursor accuracy is measured by the MTE, the difference between the centers of target and cursor in pixels, sampled 5 times per second, over the test. Lower scores are indicative of more accurate tracking.

  • CTT Mean Reaction Time [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) A further outcome derived from the CTT is a peripheral awareness task where the participant responds to a stimulus presented in the periphery of vision, while simultaneously attending to the tracking test. The mean reaction time, in milliseconds, to these stimuli over the trial period is taken as the response measure for this component of the divided attention task. A lower mean reaction time is indicative of better peripheral awareness.

  • Critical Flicker Fusion Test-Ascending Threshold [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Critical Flicker Fusion (CFF) is a validated cognitive assessment task that provides an index of central nervous system (CNS) activity and attention modulated motion detection. Participants are required to discriminate flicker from fusion, and vice versa, in a set of four light-emitting diodes arranged in a one-centimetre square. These diodes are held in foveal fixation when viewed at a distance of one metre. Individual thresholds are determined on four ascending and four descending scales. The mean of the four ascending presentations give the ascending threshold frequency in hertz.

  • Critical Flicker Fusion Test -Descending Threshold [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) The mean of the four descending presentations from the CFF give the descending threshold frequency in hertz.

  • Critical Flicker Fusion Test-Overall Threshold [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) The mean of the four ascending and four descending presentations of the CFF give the overall threshold frequency in hertz.

  • Total Number of Attempted Symbol Substitutions, as Assessed by the Digit Symbol Substitution Test [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind). The Digit Symbol Substitution Test (DSST) is a pen and paper test that consists of rows of blank squares paired with randomly assigned digits (between 0 and 9). Participants are required to substitute each digit with a different nonsense symbol, according to a key printed at the top of the sheet that indicates the nonsense symbol that corresponds to each digit. Participants are given 120 seconds in which to complete the test.

  • Total Number of Correct Symbol Substitutions, as Assessed by the Digital Symbol Substitution Test [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind). The Digit Symbol Substitution Test (DSST) is a pen and paper test that consists of rows of blank squares paired with randomly assigned digits (between 0 and 9). Participants are required to substitute each digit with a different nonsense symbol, according to a key printed at the top of the sheet that indicates the nonsense symbol that corresponds to each digit. Participants are given 120 seconds in which to complete the test.

  • 1-Back Percentage of Correct Responses [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    The N-Back task requires the participant to indicate, using the mouse, whether the current stimulus presented on the screen and the one immediately before it visually match (i.e., "one-back"). In the versions of the tests used in this study, the stimuli are presented on screen for 500 ms, and the interval between stimuli is 2500 ms, with a ratio of 1:2 of "match" trials to non-match trials. The duration of the test is 2 minutes. The percentage of correct responses is the percentage of correct responses given in 2 minutes.

  • 3-Back Percentage of Correct Responses [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind). In "3-back" tasks, a comparison is made between the current stimulus and the two before the immediately preceding stimulus. In the versions of the tests used in this study, the stimuli are presented on screen for 500 ms, and the interval between stimuli is 2500 ms, with a ratio of 1:2 of "match" trials to non-match trials. The duration of the test is 2 min. The percentage of correct responses is the percentage of correct responses given in 2 min.

  • 1-Back Reaction Time [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind). Reaction time is the time taken to respond to a stimulus.

  • 3-Back Reaction Time [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind). Reaction time is the time taken to respond to a stimulus.

  • Sedation Score, as Assessed by the Linear Analogue Rating Scales [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    The Linear Analogue Rating Scale (LARS) is used as a measure of the subjective effects of psychoactive drugs. Participants mark a series of 10 cm (100 unit line) analogue scales (1-100, 100 = most impaired) relating to dizzy, clumsy, anxious, relaxed, tired, drowsy, alert, energetic, sad, and depressed, indicating their present feeling with regard to a mid-point, representing their "usual" state of mind before treatment began. The higher the score, the more impaired the participant feels. The Tiredness, Alertness, Energy, and Drowsiness scores are averaged to derive an overall Sedation score.

  • Mood Score, as Assessed by the Linear Analogue Rating Scales [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind). The Anxiety, Depression, Relaxed, and Sadness scores are averaged to derive an overall "Mood" score (as described in Outcome Measure 14). Each item was assessed on a 1-100 point scale, where 100 indicates most impaired.

  • Coordination Score, as Assessed by the Linear Analogue Rating Scales [ Time Frame: 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind) ] [ Designated as safety issue: No ]
    Analysis was performed on the individual assessments conducted at 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, and 11.5 hours post-dose (double-blind). The Dizziness and Clumsiness scores are averaged to derive an overall "Coordination" score (as described in Outcome Measure 14). Each item was assessed on a 1-100 point scale, where 100 indicates most impaired.


Enrollment: 91
Study Start Date: July 2008
Study Completion Date: October 2008
Primary Completion Date: October 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Crossover
All subjects received all three treatments in a randomised order
Drug: GSK1755165; placebo; zopiclone
Subjects receive either 3mg GSK1755165, matching placebo or 7.5mg zopiclone

  Eligibility

Ages Eligible for Study:   25 Years to 40 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

INCLUSION CRITERIA:

  • Healthy male and female subjects providing written informed consent.

EXCLUSION CRITERIA:

  • Significant medical disorders;
  • Sleeping difficulties; alcohol and/or substance abuse;
  • Recent use of psychotropic medications, or need to use them during study;
  • Very high BMI or very low BMI or bodyweight;
  • Known hypersensitivity to the study medications or their excipients;
  • Unwilling or unable to meet certain lifestyle or dietary restrictions during the study.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00699608

Locations
United Kingdom
GSK Investigational Site
Guildford, Surrey, United Kingdom, GU2 7XP
Sponsors and Collaborators
GlaxoSmithKline
Investigators
Study Director: GSK Clinical Trials GlaxoSmithKline
  More Information

No publications provided

Responsible Party: GlaxoSmithKline
ClinicalTrials.gov Identifier: NCT00699608     History of Changes
Other Study ID Numbers: ESZ111503
Study First Received: June 17, 2008
Results First Received: October 6, 2009
Last Updated: May 31, 2012
Health Authority: United Kingdom: Medicines and Healthcare Products Regulatory Agency

Keywords provided by GlaxoSmithKline:
Zopiclone
Hypnotic
Residual effects
Eszopiclone

Additional relevant MeSH terms:
Eszopiclone
Zopiclone
Central Nervous System Agents
Central Nervous System Depressants
Hypnotics and Sedatives
Pharmacologic Actions
Physiological Effects of Drugs
Therapeutic Uses

ClinicalTrials.gov processed this record on November 25, 2014